How to build a light sensor using an LDR and a transistor

This is a simple light/dark sensor circuit built on a breadboard. This project is suitable for electronics beginners.

The LED connected to the transistor stays on until the light falling on the photoresistor is blocked.

You can find similar projects at buildcircuit.com also.

 

About the Author

Leave a Reply

Your email address will not be published. Required fields are marked *